bauerle



Jan. 29:

T. BAUERLE CALCULATING MACHINE Filed Jan. 25, 1923 2 Sheets-Shoat I Q Q @wwwww Fig.4.? I g l H 1- i Q Q G 9.0 0

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5 Pi if Patented Jan. 29, 1924.

U NIT ED S T A T E S 'ronms-slinnnnn, or scnwanzwsrn, oisnmanr.

CALCULATING MACHINE.

Application filed January 25. 1923. Serial No. 614,832.

To all whom. it may concern:

Beit known that I,.Toeus Bionnaa, a citizen of'Germany, residing at St. Georgen Bad,- Schwarzwald, Germany, have invent- 6 ed certain new and usefullmprovements in Calculating Machines, of which the followin -is'.-alspecification.

y invention has reference (ac-calculating machinesof the Thomas typekand it refers in particular-to means fore ecting multi plications on machines of this kind in a simpler and easier manner than was hither- -to possible; as ordinarily constructed muchine's ofthe kind! referred to in ,order to effect-multiplications require" the driving crankto be turned'as many times as there are digits contained-in'the'multiplier which necessitates anundesirably great expendi tore of tihie-ahd power.

10' ventlon is-intendeid'toobyiate-this difiieultyby in'sertin g'a transmissionear in'g intermediate the driving crank an "the:- counting mechanism, means being provided:

for-Betti tho'gearin to correspondto'the '-d.'iffe1ntl v alhes g enable the -oper cations: a. single turn of-tlie- Inthe accompanying=diimvl fioationsof' calculating mac kindreferred to' and'hinbodj'ing my invention-are showrr'by way-"of 'examplei In'the m Figure 1' isaplahview of the-machine.

crank.-

Figure=2'-is"a planview of a portion of' the device with the covering plate removed, and on an enlarged scale;

Figures 3; 4 and 5 are sectional views-on the lmes AB, CD and EF, respectively of Fi re-2;

eferring to Fl 1 to 5, the shaft 2, which is operated'by the crank 1', is connected'by bevel caring 3 to a shaft 4, upon which a plur lity of toothed gear whee s 5 ofi'different, stepsped' diameters is secured.

1 These ear whee are'in mesh with toothed gear w eels 7 loosely mounted on the intermediate shaft 6, and arran ed in thereverse order of transmission wit relation to the wheels 6; The wheels 7' are provided with grooves 9' adapted for the engagement of the coupling 'rnemberslO secure to the shaft 6 and formed as'lreysof a len h not-exceed in}: the width of a toothed w eel,- so that by the displacement-of the shaft 6 only one of -thle 51cm wheels 7 is-coupled to the shaft 6,

is provided, moreover, with' a= longitl'lB'Shflft'Q, by means of a prismatic- 'of 'the= multlplierysb as toator" to carry-cut -mult1ph- 'two'mo'dL- ine of the tndinnlgroove 11 to which the transmission: wheel 12 is loosely connected by means of a key 13. From the wheel 12 the movement is transmitted to the toothed wheel 14 co loosely mounted on the shaft 4 andconnected to the bevel gear wheel 15. From thisi: wheel and by means of the bevel wheel 17 its shaft 16, and the bevel' ear wheels 18 the square shaft 19 is operated together with 5 the setting wheels 20 longitudinall displaceable' thereon, and thesetting cy de'rsl- 39 of the counting mechanism.

The longitudinally displaceable sha'f-t 6"is rotnl'nbly connected to a, slidin member; 22 displaceable in a slot an pro'j'ectin through the cover plate 21, and provide with an adjusting handle 23 and: anaind'n cater 24 which isfset in accordance with a graduation 26 provided upon the cover plate 21. The slide 22 is loosely coupled by means ofa stnd'27' to the crank 1.whichiradially displao'eable in the hub '28 lreye'd to guide for instance. In the hub 28 a spring--1nfiuenced, upwardly rounded stud *29or the like is provi' edrwhichis adapted to snappingly engage with the likewise roundedsocktsAO ofthe crank 1, by which means the crank lmr l may be-ndjusted-by steps andimaq; be easily-locked in position after each'- ad]'ustment, while the displacement ofthe crankbar is not interfered with; Onthe other side of the hub28 :1 studzinunder the influenco'of'a. downwardly pressing spring 30 is mounted"the=sn-id stud 31 being connected with arol-ler 32 adapted to movealongthe roller rnce34, provided with the depression 33, during the rotation of the crank 1. Upon rotating! the crank, starting-with the initial position shown in Figure 1, the roller 32 is raised from the depression 33, which corresponds to the initial position of the parts, by which means the stud 31- is forced upwardsinto one of the sockets 40 provided in the'crnnk bar, thus enshrin the locking in position of the crank bar wit relation to the hub 28, so that displacement of'the crank during=rotation is prevented. After the to tntion' of thwcranlr has been-com leted the roller 32 once moreengngesthe e reacion 33 of the race 34, thereb causing t l-le stud" 31 to become disengage from the crank bar-1'.

On the cover plate 21 an angle piece 36 is secured whie serves as a stop after each rotation of thecrank; The hen 1e 36 of-the crank 1 is movable upwards a ainst the action of the spring 37 which n ls the handle 36 downwards and causes tie extension 38 of the handle pin to place itself within I reach of the angle piece 35.

If it be desired for instance to carry out the multiplication 4 times 125, the multiplier 4 is set by placing the pointer 24 upon the figure 4 on the; rsduatinn 26, or by the 1 displacement oft e sliding member 22 by means of the handle 23. By this means the shaft 6 with the coupling keys 10 is also longitudinally displaced, and the toothed wheel 7 corres ondiu to the transmission 1 gearing is clutc ed to 51c shaft 6. The multiplicand 125 is then set by means of the slide 42 provided with pointer 41- After the setting of the numbers the handle 35 of the crank 1 which has been radially adjusted by'the displacement of the multiplier slide 22, is raised to such an extent, until the stud 38 can move past'the an le iece 35, whereupon the crank 1 is once s owly rotated, causing the product 4 times 125:500 to ap ear in the inspection openings 43 of the pro not counting mechanism (Fig. 1).

In the case of additions the slide 22 is locked in the initial osition by means of a locking dog 55, by w ich means the transmission :of'the movement of the crank is efl'ected-"directly to the main shaft 16 of the "dauntingwheel which is driven by the wheel 15; '1" i My invention may also be applied to calculati -machi'nes of the Thomas-type pro viddl? with key adjustment.

The operating crank is -.mounted upon the cover plate 21,

ulsb-beiarranged at the side or frameof the-machine; i:

sThefclutchingor cou ling means described :for connecting the multiplier slide 22, 27 to Tithe prank: arm l"does'not only produce the referably at it may in front of the :resultz-of not interferingwith the rotation 4&| of-the-crank .'butiit causes at the same time -'an: -1ncrease'or reduction of the lever arm bfi'the cra'nk corresponding to the increase #01 -'reduction of the ower necessitated by the adjustment of the gear transmission. ;This results in an automatic compensating action by the larger crank arm of the lever, :with the -insert-ion of a greater gear transmission and the corresponding expense of power resulting therefrom. -Verious other modifications of the principles of this invention will suggest themselves tothe expert to adapt the invention to varying conditions of application, and to the convenience of the user. I claim:

1. Calculating machine of the Thomas type, comprising a radially displaceable driving crank, a counting mechanism, an axially displnceable intermediate shaft engageable with said driving crank, it plurality of gear wheels of different diameters ads ted to be selectively coupled with said she t'and in en agement with said counting mechanism, and means to lock said crank shaft in the adjusted osition.

2. Calculating macliine of the Thomas type, comprising a radially adjustable driv ing crank, a counting mechanism, an axially displaceable intermediate shaft detachably engageable with said drivi crank, a. plura ity of gear wheels of difierent diameters adapted to be selectively coupled with said she and in engagement with said counting mechanism, spring dpressed locking means engage blc with sai crank shaft in the ad juste ositions thereof, and coupling means for sai gear wheels.

3. A. calculating machine of the Thomas gype, comprising a radially displaceable riving crank, a countingmechanism, a slide delachably engageable with said driving crank, indicating means on said slide, a shaft operatively connected to said driving crank, transmission gearing on said gear shaft, engagiiable with the counting means and gear w eels on said shaft, an axially displaceable intermediate shaft connected to said slide, gear wheels of different diameters meshing shaft, means. for selectively couplingmaid gear wheels to said intermediate shaftand springactuated locking means for locking the crankshaft in the adjusted position.

type, comprising a chiving shaft and a re ially dlS laceable driving crank-,means for rcsilien y fixing'said crank in-several radilal positions, an mtermecliateshaft positive shiftiid axially when said crank; is displaced radially, a plurality of gear wheels-of differentdiameters on said intermediate sh aft, means for selectively coupling-said wheels with said shaft, a transmission shaft and-- gear wheels fixed to saidtransmission shaft and meshing permanently with the *gear wheels on said intermediate shaft, and counting mechanism in operative connection with said transmission shaft. 7

5. Calculating machine of the Thomas t e, comprising a'driving-shaftand a radizill'vdisplaceable drivin crank, means for resiliently fixing said cran in several radial ing crank for looking it on "its driving shaft during rotation, but releasing it after each rotation, an intermediate shaft positively connected with said crank so as to be shifted axially when said crank is displaced radially, a plurality of ear wheels of differentdiameters on 'sai intermediate shaft. means for selectively coupling said wheels with said shaft, :1 transmission shaft and gear wheels fixed to said transmission shaft and meshingpennanently with the gear wheels with the gear wheels on'the' firstconnected with said crank so ss'to bepositions, means cooperating with said driv- 4. Calculating machine of the "Thomas IOU on said intermediate shaft and counting mechanism in operative connection with sai transmission shaft.

6. Calculating machine of the Thomas t pe, comprisin a driving shaft and a redially displaces. is driving crank, means for resiliently fixing said crank in several radial positions, a spring actuated locking pin connecte with said crank serving for ocking it on its drivinv shaft during rotation, but relea'sin it ufi er each rotation, an intermediate she t positively connected with said crank so as to be shifted axially when said crank is dis laced radially, a plurality of gear wheels 0 difl'erent diameters on said intermediate shaft, means for selectively coupling said wheels with said shaft, a transmission shaft and gear wheels fixed to said transmission shaft and meshing permanently with the gear wheels on said in termediate shaft, and counting mechanism in operative connection with said transmission shaft.

In testimony whereof I afiix my signature.

TOBIAS BKUERLE. 

